What’s the chance ?

So had sex a bunch of times, unprotected of course, at the end of my period and a few times in the last 2 weeks, now I’m 6 days away from my period & for the last 4 days I’ve had such sore boobs at night, I know it’s the only symptom I had other then feeling tired but I have a 2 year old at home also!

My boobs haven’t gotten bigger by any means just really sore at night and in the mornings!

Should I test the day I expect my period ?